Merge two types into a new type. Keys of the second type overrides keys of the first type.

For example

type foo = {
  name: string;
  age: string;
}
type bar = {
  age: number;
  sex: string
}

type Result = Merge<foo, bar> 
// expected to be 
// {
//   name: string, 
//   age: number, sex: string
// }